Ecchi is a Japanese term meaning sexy or erotic, anything that evolves sexy characters. Derived from the word "Hentai" but their meanings are completely different. Ecchi walks that line between sexy, but never crosses it into full graphic nudity or sex.

Used frequently in Anime to either recap past events or provide a back story for a character, either their origin story or their off-screen training of new attack. Sometime and entire episode/chapter would be a entire flashback.

Humans are typically depicted as the dominant species of the planet Earth, and sometimes of other planets. Humans often mirror their real life counterparts in terms of abilities and intellect, while other times they can achieve superhuman feats.